The number of vastly unequal societies throughout history who have banned the lower classes from learning how to read, or from any kind of education at all - be

The number of vastly unequal societies throughout history who have banned the lower classes from learning how to read, or from any kind of education at all - beyond whatever narrow training will make them better perform their specific duties for those on top. ...and not just historically. Some societies where significant minority groups are banned from getting an education, in order to further perpetuate their marginalisation, still exist today.